Improved
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ILizoiq.sito` WRAY, or. RA Menara, @E Nei. AlN D, smears 87,748, stuurman, 11ste,

.a full, clear', andexaot description thereof, which will enable others skilled in the art'to make and use the same, reference being had 'to the accompanying drawings, forming part of -this specification.

My invention of improved methods" f and appaiatus for obtainingr separating metals .from their ores, matrices, slimes, tailings,.or` other substances contain.-

ving-thleu1, relatesto those classes, or kinds of minerals,

earths, clays, sands, gravels, or conglomerates, which contain gold or silver in any form, shape, orfcombiuation, and which may or may not require to he pnlver` i ized, Wasl\ed,concentra ted, triturnted, or nmalgamated,

. in order to facilitate'the great object of separating and .obtaining the precious metals existing in these suhstances, by washing, as-in the case o other` of the refractory minerals, suchas aurifemu and argentiferoue pyrites, sulphides, sulphurets,'antl moniates, orl lotherl combinations, containing -gold or silver, or by direct amalgamation, as in the lcme 'of the precious metals. 4

My improvedl apparatus for effecting these ohiects consists of 'a machine which has for its object to triturate the oreor substance containing the metal until it isrednced to an almost impalpahle powder. I n the tritura'ting-mnchine, or apparatnsmhichformsf my invention, the operation of amalgamation may, if desired,be carried on simultaneously with trituration,

and therefore I'deuominate itmy improved triturating and amalgamating-apparatus.

Two different forms of triturating-machiue are shownin seetionin the'drawings', at figs. 1, 2, and 3, which, inA all cases, consists of a barrel or hollow cylinder, d d, provided externally'with projectiuggroov'fes, hoops, flanges, rings, or other analogousV devices, e e, which will admit of the cylinder or barrel being placed on and rolled along a railway, for' the purposehereafter explained.

An opening is made inane or both endsof theeylinder or barrel d, for the purpose of obtainiugaccess to the interior, 'and for discharging and charging the machine. n

In Figure 1, the cylinder or. barrelis divided into three compartments, (it may, however, be either two, or one` only,),whose section, in the direction of the axis of .the cylinder, is concave, or semicireular, and in lthese semicircular spaces are pla/ced one, two, ormore'heavyghalls or spherical rollers-jj; whiehcorresponil in form to the internal shape ofthe cylinder. It fis evident, however, that the cylinder may. be plain inside,.with a number of halls placed therein. By this construction of parte, a

.powerful grinding cr trlturatingaction is obtained when y rn ce in am :man am r the harreiscr cylinders are made to roll along the rail.

. Wyf v Figure 2is-a longitudinalsecticn, and

Figure 8, a transverse section 4oii'a modiiication of thetritumtingwylinder or barrel. v- 4 In: 'this instance, the inner roller f is made of cylindricali'orm, with deep V-grooves, or serrationathronghout its entire length. Corresponding V-grooves-are made on theinternal snriiice of the rotating barrel or cylinder d, so that, as the latter is rolled' forward, the

V-grooves of the roller, by working in the V-grooves, 0r serraticns of the cylinder, will grind and tritnrate the mineral substance contained in the cylinder, and` will thus reduce it to-an impalpable powder. When operating upon auriferous or argentiferous ores, the cylinder, maybe supplied with mercury or mommy-amalgam, and, in certain cases, a series of amaigamatedlmetallic disks, on a shaft, may be also iltted inside the cylinder, so that the metallic particles maybe more speedily taken up and secured.A .Any num- 'ber of these triturating and amalgamating-barrels or cylinders maybe 'placed on a circular or other railway, constructed for the purpose, as sbgwn in theplane view, Figure 4, and side view, Figure 4X, and may be rolled alongiteither hyhandlabor, animal, steam, or other suitable power. v

` In Mexico,.and other countries where animal-power abounds, mules, horses, or other animals may be h ar-4 nessed tov one, two, 'or more of the barrels or cylinders and made to draw them forward'nnthe railway g, and, in so doing,the tritnratingnoiler', iigsl, .2, and 3, .inside the barrels er cylinders 41 grind or triturate he substance to be operated upon, and this will be effec d with a much less expenditure of powerthan if the barrels d were mounted ou axles, and rotated in the ordinarymanner. v -`When steam-poweris availablal prefer to employ a small locomotiveengine,which will draw or propel along. v

as may be desired.

' 'Il prefer to make the internal roilersf of my tritnratingsmaehinesof iron, and, in order to increase their weight, they may he castghollow, and heflledwith lead. The cylinders themselves may be made of vscod or metal, and the large iron grooves forme balls, as also the iron serretions touit .the serrated rollers, may he maniel in sections, and iittedinsidethe cylinders. Jlhe serrated vsurfaces of the may, in like manner, .be made in section. l The circular railwayg, 65.4, is provided, at convcnient places, withV switches, tnrnouts,or points, It, so that, when. the'. trituratingoperation is iinished; the

barrelsor cylinders (one or moreiof there)v mayhc removed from the railway, and other barrels or cylinders` placed thereon. l

Having thus described my invention, I claim as new, and desire to' secure -by Letters Patent- 1. Tritnrating or reducing the ores to an impalpable powder by means of balls-or rolleis, either spherical or cylindrical, and either plain, grooved, or serrated, and placed' in suitable cylinders or barrels, which are to be rolled along a railway, by any convenient power, in the manner and for thepurposeherein set forth.

2. I claim particularly, causing the balls or rollers inside the cylinders or barrels to act on and triturate the ore by rolling thelcylinders or barrels on a railway, as herein shown and described, in contl'adistinction to mounting such cylinders or barrels on shafts or centres, on which they maybe made to rotate by any suitable gearing. f The above specification of my invention signed by me, this 1st day of December,.l868. v

' l LD WRAY. l' L. 8.] Witnesses:

FRED. WALKDEN,

i f 68 Chancery Lane, London. M. WYNN, r

24 Royal Exchange/,Lomlon. 

